Jar for valves



Oct. 24, 1933. C. Q BROWN ET AL 1,931,751

JAR FOR VALVES Filed April 15, 1931 Patented Oct. 24, 1933 UNiED srATEs JAR FOR VALVES Cicero C. Brown and Ellsworth Gray, Houston,

' Tex.

Application April 13, 1931. Serial No. 529,565

3 Claims.

The invention relates to valves, blowout preventers and similar devices adapted to be used particularly in oil well drilling.

In closing a valve or a ram upon the blowout preventer during the period when fluid is flowing under pressure therethru, it is oftentimes exceedingly diflicult to close the device tightly so that a seal may be obtained. Furthermore, when the valve is to be again opened the pressure is such that it is almost impossible to get the valve started so as to open it.

It is an object of our invention to provide a jar which may be used upon the handle of a gate valve, blowout preventer or the like, which will enable the operator to obtain a pounding action upon the valve so as to jar it loose from its seat when the valve is to be opened or which may force it tightly into sealing position when the device is closed.

We desire to provide a device of this character which is easily operated and adapted for operation from a distance when desired.

In the drawing herewith, Fig. 1 is a side view partly in vertical section illustrating the struction of our device.

Fig. 2 is a front elevation thereof.

Fig. 3 is an assembly view showing how the device may be applied upon a blowout preventer of ordinary construction.

In the drawing herewith, the numeral 1 refers to a handle or wheel by means of which the valve is operated. As shown in Fig. 3, this Wheel is connected to a valve stem 2, extending through a stuffing box into a housing 4 for a valve or ram, and it is to be understood that the rotation of the valve stem 2 by means of a handle or wheel 1 will advance or retract the valve or ram relative to its seat.

In order to open or close the valve under pressure I contemplate forming on the handle or wheel 1 an arcuate opening 5, which is enclosed on one side by the rim of the handle and on the other side by a raised boss 6 on the wheel. The arcuate opening 5 is to accommodate a post or pin 7, which is adapted to extend therethrough.

The post or pin 7 is formed upon a bar 8, which, as shown particularly in Fig. 1, is curved somewhat between its ends and has a central recess 9 therein to receive a centering post 10 formed upon the outer end of the valve stem 2. The post 7 extends through an arcuate opening 5 in the handle of the valve and has a washer 11 on its jar the valve stem and the valve so that the valve may be moved.

We show upon each end of the bar 8 a handle 13 by means of which the bar may be operated to move the post '7 within the slots '7. Also, centrally of the bar we may attach a shaft 14, which may extend to some distance away from the valve and have thereon an operating handle 15 by means of which the bar may be swung on its pivot some distance away. This allows the valve or ram to be closed evenwhere the well is blowing out or where fireis present.

In the operation of the device the valve may be closed by hand as far as possible and if the valve sticks or can not be completely closed, the bar 8 may be slung violently against the end of the opening 5 so as to exert a jar thereon and force it to its seat. In the opening of the valve the same device is employed to jar the valve and open it so as to move it from its seat. The main advantage of the device lies in the fact that a means is provided whereby a tight seal may be formed without the necessity of other mechanical appliances-or mechanical devices employing the use of steam or other pressure as is sometimes required. The device is easily operated and will enable a valve or ram to be operated whereotherwise its operation would be exceedingly difiicult.

Having described our invention, what we claim as new is:

. 1. A valve, a'stem thereon, a handle on said stem of wheel shape rotatable to move said valve, in combination with a bar pivoted centrally to rotate about said valve stem, and a stud on said bar engaging within an arcuate opening in said handle and adapted to engage, the ends of said opening when said bar is swung on its pivot to exert a jar thereon.

2. Avalve, a stem, a handle of wheel form thereon having an arcuate opening adjacent its outer side, a bar pivoted to swing about said valve stem and a stud on said bar engaging in said opening and adapted to move in said opening and means to swing said bar on its pivot.

3. A valve, a stem thereon, a handle of wheel shape fixed to said stem, in combination with a bar pivoted centrally to rotate about said stem, and posts on said bar engaging in openings in said handle and having a limited movement therein and means whereby said bar may be swung about its pivot whereby a jar may be delivered by said posts to said handle.

. CICERO 0. BROWN.

ELLSWORTI-I. GRAY.

outer end, held in position by a cap screw 12. 

